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project64/Source/Project64-core/N64System/N64RomClass.cpp

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/****************************************************************************
* *
* Project64 - A Nintendo 64 emulator. *
* http://www.pj64-emu.com/ *
* Copyright (C) 2012 Project64. All rights reserved. *
* *
* License: *
* GNU/GPLv2 http://www.gnu.org/licenses/gpl-2.0.html *
* *
****************************************************************************/
#include "stdafx.h"
#include "N64RomClass.h"
#include "SystemGlobals.h"
#include <Project64-core/3rdParty/zip.h>
#include <Common/md5.h>
#include <Common/Platform.h>
#include <Common/MemoryManagement.h>
#include <memory>
#ifdef _WIN32
#include <Project64-core/3rdParty/7zip.h>
#endif
CN64Rom::CN64Rom() :
m_ROMImage(NULL),
m_ROMImageBase(NULL),
m_ErrorMsg(EMPTY_STRING),
m_Country(UnknownCountry),
m_CicChip(CIC_UNKNOWN)
{
}
CN64Rom::~CN64Rom()
{
UnallocateRomImage();
}
bool CN64Rom::AllocateRomImage(uint32_t RomFileSize)
{
WriteTrace(TraceN64System, TraceDebug, "Allocating memory for rom");
std::auto_ptr<uint8_t> ImageBase(new uint8_t[RomFileSize + 0x1000]);
if (ImageBase.get() == NULL)
{
SetError(MSG_MEM_ALLOC_ERROR);
WriteTrace(TraceN64System, TraceError, "Failed to allocate memory for rom (size: 0x%X)", RomFileSize);
return false;
}
uint8_t * Image = (uint8_t *)(((uint64_t)ImageBase.get() + 0xFFF) & ~0xFFF); // start at begining of memory page
WriteTrace(TraceN64System, TraceDebug, "Allocated rom memory (%p)", Image);
//save information about the rom loaded
m_ROMImageBase = ImageBase.release();
m_ROMImage = Image;
m_RomFileSize = RomFileSize;
return true;
}
bool CN64Rom::AllocateAndLoadN64Image(const char * FileLoc, bool LoadBootCodeOnly)
{
WriteTrace(TraceN64System, TraceDebug, "Trying to open %s", FileLoc);
if (!m_RomFile.Open(FileLoc, CFileBase::modeRead))
{
WriteTrace(TraceN64System, TraceError, "Failed to open %s", FileLoc);
return false;
}
//Read the first 4 bytes and make sure it is a valid n64 image
uint8_t Test[4];
m_RomFile.SeekToBegin();
if (m_RomFile.Read(Test, sizeof(Test)) != sizeof(Test))
{
m_RomFile.Close();
WriteTrace(TraceN64System, TraceError, "Failed to read ident bytes");
return false;
}
if (!IsValidRomImage(Test))
{
m_RomFile.Close();
WriteTrace(TraceN64System, TraceError, "invalid image file %X %X %X %X", Test[0], Test[1], Test[2], Test[3]);
return false;
}
uint32_t RomFileSize = m_RomFile.GetLength();
WriteTrace(TraceN64System, TraceDebug, "Successfully Opened, size: 0x%X", RomFileSize);
//if loading boot code then just load the first 0x1000 bytes
if (LoadBootCodeOnly)
{
WriteTrace(TraceN64System, TraceDebug, "loading boot code, so loading the first 0x1000 bytes", RomFileSize);
RomFileSize = 0x1000;
}
if (!AllocateRomImage(RomFileSize))
{
m_RomFile.Close();
return false;
}
//Load the n64 rom to the allocated memory
g_Notify->DisplayMessage(5, MSG_LOADING);
m_RomFile.SeekToBegin();
uint32_t count, TotalRead = 0;
for (count = 0; count < (int)RomFileSize; count += ReadFromRomSection)
{
uint32_t dwToRead = RomFileSize - count;
if (dwToRead > ReadFromRomSection) { dwToRead = ReadFromRomSection; }
if (m_RomFile.Read(&m_ROMImage[count], dwToRead) != dwToRead)
{
m_RomFile.Close();
SetError(MSG_FAIL_IMAGE);
WriteTrace(TraceN64System, TraceError, "Failed to read file (TotalRead: 0x%X)", TotalRead);
return false;
}
TotalRead += dwToRead;
//Show Message of how much % wise of the rom has been loaded
g_Notify->DisplayMessage(0, stdstr_f("%s: %.2f%c", GS(MSG_LOADED), ((float)TotalRead / (float)RomFileSize) * 100.0f, '%').c_str());
}
if (RomFileSize != TotalRead)
{
m_RomFile.Close();
SetError(MSG_FAIL_IMAGE);
WriteTrace(TraceN64System, TraceError, "Expected to read: 0x%X, read: 0x%X", TotalRead, RomFileSize);
return false;
}
g_Notify->DisplayMessage(5, MSG_BYTESWAP);
ByteSwapRom();
//Protect the memory so that it can not be written to.
ProtectMemory(m_ROMImage, m_RomFileSize, MEM_READONLY);
return true;
}
bool CN64Rom::AllocateAndLoadZipImage(const char * FileLoc, bool LoadBootCodeOnly)
{
unzFile file = unzOpen(FileLoc);
if (file == NULL)
{
return false;
}
int port = unzGoToFirstFile(file);
bool FoundRom = false;
//scan through all files in zip to a suitable file is found
while (port == UNZ_OK && !FoundRom)
{
unz_file_info info;
char zname[260];
unzGetCurrentFileInfo(file, &info, zname, sizeof(zname), NULL, 0, NULL, 0);
if (unzLocateFile(file, zname, 1) != UNZ_OK)
{
SetError(MSG_FAIL_ZIP);
break;
}
if (unzOpenCurrentFile(file) != UNZ_OK)
{
SetError(MSG_FAIL_ZIP);
break;
}
//Read the first 4 bytes to check magic number
uint8_t Test[4];
unzReadCurrentFile(file, Test, sizeof(Test));
if (IsValidRomImage(Test))
{
//Get the size of the rom and try to allocate the memory needed.
uint32_t RomFileSize = info.uncompressed_size;
if (LoadBootCodeOnly)
{
RomFileSize = 0x1000;
}
if (!AllocateRomImage(RomFileSize))
{
m_RomFile.Close();
return false;
}
//Load the n64 rom to the allocated memory
g_Notify->DisplayMessage(5, MSG_LOADING);
memcpy(m_ROMImage, Test, 4);
uint32_t dwRead, count, TotalRead = 0;
for (count = 4; count < (int)RomFileSize; count += ReadFromRomSection)
{
uint32_t dwToRead = RomFileSize - count;
if (dwToRead > ReadFromRomSection) { dwToRead = ReadFromRomSection; }
dwRead = unzReadCurrentFile(file, &m_ROMImage[count], dwToRead);
if (dwRead == 0)
{
SetError(MSG_FAIL_ZIP);
unzCloseCurrentFile(file);
break;
}
TotalRead += dwRead;
//Show Message of how much % wise of the rom has been loaded
g_Notify->DisplayMessage(5, stdstr_f("%s: %.2f%c", GS(MSG_LOADED), ((float)TotalRead / (float)RomFileSize) * 100.0f, '%').c_str());
}
dwRead = TotalRead + 4;
if (RomFileSize != dwRead)
{
unzCloseCurrentFile(file);
SetError(MSG_FAIL_ZIP);
g_Notify->DisplayMessage(1, "");
break;
}
FoundRom = true;
g_Notify->DisplayMessage(5, MSG_BYTESWAP);
ByteSwapRom();
//Protect the memory so that it can not be written to.
ProtectMemory(m_ROMImage, m_RomFileSize, MEM_READONLY);
}
unzCloseCurrentFile(file);
if (!FoundRom)
{
port = unzGoToNextFile(file);
}
}
unzClose(file);
return FoundRom;
}
void CN64Rom::ByteSwapRom()
{
uint32_t count;
switch (*((uint32_t *)&m_ROMImage[0]))
{
case 0x12408037:
for (count = 0; count < m_RomFileSize; count += 4)
{
m_ROMImage[count] ^= m_ROMImage[count + 2];
m_ROMImage[count + 2] ^= m_ROMImage[count];
m_ROMImage[count] ^= m_ROMImage[count + 2];
m_ROMImage[count + 1] ^= m_ROMImage[count + 3];
m_ROMImage[count + 3] ^= m_ROMImage[count + 1];
m_ROMImage[count + 1] ^= m_ROMImage[count + 3];
}
break;
case 0x40072780: //64DD IPL
case 0x40123780:
for (count = 0; count < m_RomFileSize; count += 4)
{
m_ROMImage[count] ^= m_ROMImage[count + 3];
m_ROMImage[count + 3] ^= m_ROMImage[count];
m_ROMImage[count] ^= m_ROMImage[count + 3];
m_ROMImage[count + 1] ^= m_ROMImage[count + 2];
m_ROMImage[count + 2] ^= m_ROMImage[count + 1];
m_ROMImage[count + 1] ^= m_ROMImage[count + 2];
}
break;
case 0x80371240: break;
default:
g_Notify->DisplayError(stdstr_f("ByteSwapRom: %X", m_ROMImage[0]).c_str());
}
}
CICChip CN64Rom::GetCicChipID(uint8_t * RomData, uint64_t * CRC)
{
uint64_t crc = 0;
int32_t count;
for (count = 0x40; count < 0x1000; count += 4)
{
crc += *(uint32_t *)(RomData + count);
}
if (CRC != NULL) { *CRC = crc; }
switch (crc)
{
case 0x000000D0027FDF31: return CIC_NUS_6101;
case 0x000000CFFB631223: return CIC_NUS_6101;
case 0x000000D057C85244: return CIC_NUS_6102;
case 0x000000D6497E414B: return CIC_NUS_6103;
case 0x0000011A49F60E96: return CIC_NUS_6105;
case 0x000000D6D5BE5580: return CIC_NUS_6106;
case 0x000001053BC19870: return CIC_NUS_5167; //64DD CONVERSION CIC
case 0x000000D2E53EF008: return CIC_NUS_8303; //64DD IPL
default:
return CIC_UNKNOWN;
}
}
void CN64Rom::CalculateCicChip()
{
uint64_t CRC = 0;
if (m_ROMImage == NULL)
{
m_CicChip = CIC_UNKNOWN;
return;
}
m_CicChip = GetCicChipID(m_ROMImage, &CRC);
if (m_CicChip == CIC_UNKNOWN)
{
if (bHaveDebugger())
{
g_Notify->DisplayError(stdstr_f("Unknown CIC checksum:\n%I64X.", CRC).c_str());
}
}
}
void CN64Rom::CalculateRomCrc()
{
uint32_t t0, t2, t3, t4, t5;
uint32_t a0, a1, a2, a3;
uint32_t s0;
uint32_t v0, v1;
// CIC_NUS_6101 at=0x5D588B65 , s6=0x3F
// CIC_NUS_6102 at=0x5D588B65 , s6=0x3F
// CIC_NUS_6103 at=0x6C078965 , s6=0x78
// CIC_NUS_6105 at=0x5d588b65 , s6=0x91
// CIC_NUS_6106 at=0x6C078965 , s6=0x85
// 64DD IPL at=0x02E90EDD , s6=0xdd
//v0 = 0xFFFFFFFF & (0x3F * at) + 1;
switch (m_CicChip)
{
case CIC_NUS_6101:
case CIC_NUS_6102: v0 = 0xF8CA4DDC; break;
case CIC_NUS_6103: v0 = 0xA3886759; break;
case CIC_NUS_6105: v0 = 0xDF26F436; break;
case CIC_NUS_6106: v0 = 0x1FEA617A; break;
default:
return;
}
ProtectMemory(m_ROMImage, m_RomFileSize, MEM_READWRITE);
v1 = 0;
t0 = 0;
t5 = 0x20;
a3 = v0;
t2 = v0;
t3 = v0;
s0 = v0;
a2 = v0;
t4 = v0;
for (t0 = 0; t0 < 0x00100000; t0 += 4)
{
v0 = *(uint32_t *)(m_ROMImage + t0 + 0x1000);
v1 = a3 + v0;
a1 = v1;
if (v1 < a3) t2 += 0x1;
v1 = v0 & 0x001F;
a0 = (v0 << v1) | (v0 >> (t5 - v1));
a3 = a1;
t3 = t3 ^ v0;
s0 = s0 + a0;
if (a2 < v0) a2 = a3 ^ v0 ^ a2;
else a2 = a2 ^ a0;
if (m_CicChip == CIC_NUS_6105)
{
t4 = (v0 ^ (*(uint32_t *)(m_ROMImage + (0xFF & t0) + 0x750))) + t4;
}
else t4 = (v0 ^ s0) + t4;
}
if (m_CicChip == CIC_NUS_6103)
{
a3 = (a3 ^ t2) + t3;
s0 = (s0 ^ a2) + t4;
}
else if (m_CicChip == CIC_NUS_6106)
{
a3 = 0xFFFFFFFF & (a3 * t2) + t3;
s0 = 0xFFFFFFFF & (s0 * a2) + t4;
}
else
{
a3 = a3 ^ t2 ^ t3;
s0 = s0 ^ a2 ^ t4;
}
*(uint32_t *)(m_ROMImage + 0x10) = a3;
*(uint32_t *)(m_ROMImage + 0x14) = s0;
ProtectMemory(m_ROMImage, m_RomFileSize, MEM_READONLY);
}
CICChip CN64Rom::CicChipID()
{
return m_CicChip;
}
bool CN64Rom::IsValidRomImage(uint8_t Test[4])
{
if (*((uint32_t *)&Test[0]) == 0x40123780) { return true; }
if (*((uint32_t *)&Test[0]) == 0x12408037) { return true; }
if (*((uint32_t *)&Test[0]) == 0x80371240) { return true; }
if (*((uint32_t *)&Test[0]) == 0x40072780) { return true; } //64DD IPL
return false;
}
void CN64Rom::CleanRomName(char * RomName, bool byteswap)
{
if (byteswap)
{
for (int count = 0; count < 20; count += 4)
{
RomName[count] ^= RomName[count + 3];
RomName[count + 3] ^= RomName[count];
RomName[count] ^= RomName[count + 3];
RomName[count + 1] ^= RomName[count + 2];
RomName[count + 2] ^= RomName[count + 1];
RomName[count + 1] ^= RomName[count + 2];
}
}
//truncate all the spaces at the end of the string
for (int count = 19; count >= 0; count--)
{
if (RomName[count] == ' ')
{
RomName[count] = '\0';
}
else if (RomName[count] == '\0')
{
}
else
{
count = -1;
}
}
RomName[20] = '\0';
//remove all /,\,: from the string
for (int count = 0; count < (int)strlen(RomName); count++)
{
switch (RomName[count])
{
case '/': case '\\': RomName[count] = '-'; break;
case ':': RomName[count] = ';'; break;
}
}
}
void CN64Rom::NotificationCB(const char * Status, CN64Rom * /*_this*/)
{
g_Notify->DisplayMessage(5, stdstr_f("%s", Status).c_str());
}
bool CN64Rom::LoadN64Image(const char * FileLoc, bool LoadBootCodeOnly)
{
UnallocateRomImage();
m_ErrorMsg = EMPTY_STRING;
stdstr ext = CPath(FileLoc).GetExtension();
bool Loaded7zFile = false;
#ifdef _WIN32
if (strstr(FileLoc, "?") != NULL || _stricmp(ext.c_str(), "7z") == 0)
{
stdstr FullPath = FileLoc;
//this should be a 7zip file
char * SubFile = strstr(const_cast<char*>(FullPath.c_str()), "?");
if (SubFile == NULL)
{
//Pop up a dialog and select file
//allocate memory for sub name and copy selected file name to var
return false; //remove once dialog is done
}
else
{
*SubFile = '\0';
SubFile += 1;
}
C7zip ZipFile(FullPath.c_str());
ZipFile.SetNotificationCallback((C7zip::LP7ZNOTIFICATION)NotificationCB, this);
for (int i = 0; i < ZipFile.NumFiles(); i++)
{
CSzFileItem * f = ZipFile.FileItem(i);
if (f->IsDir)
{
continue;
}
stdstr ZipFileName;
ZipFileName.FromUTF16(ZipFile.FileNameIndex(i).c_str());
if (SubFile != NULL)
{
if (_stricmp(ZipFileName.c_str(), SubFile) != 0)
{
continue;
}
}
//Get the size of the rom and try to allocate the memory needed.
uint32_t RomFileSize = (uint32_t)f->Size;
//if loading boot code then just load the first 0x1000 bytes
if (LoadBootCodeOnly) { RomFileSize = 0x1000; }
if (!AllocateRomImage(RomFileSize))
{
return false;
}
//Load the n64 rom to the allocated memory
g_Notify->DisplayMessage(5, MSG_LOADING);
if (!ZipFile.GetFile(i, m_ROMImage, RomFileSize))
{
SetError(MSG_FAIL_IMAGE);
return false;
}
if (!IsValidRomImage(m_ROMImage))
{
SetError(MSG_FAIL_IMAGE);
return false;
}
g_Notify->DisplayMessage(5, MSG_BYTESWAP);
ByteSwapRom();
//Protect the memory so that it can not be written to.
ProtectMemory(m_ROMImage, m_RomFileSize, MEM_READONLY);
Loaded7zFile = true;
break;
}
if (!Loaded7zFile)
{
SetError(MSG_7Z_FILE_NOT_FOUND);
return false;
}
}
#endif
//Try to open the file as a zip file
if (!Loaded7zFile)
{
if (!AllocateAndLoadZipImage(FileLoc, LoadBootCodeOnly))
{
if (m_ErrorMsg != EMPTY_STRING)
{
return false;
}
if (!AllocateAndLoadN64Image(FileLoc, LoadBootCodeOnly))
{
return false;
}
}
}
char RomName[260];
//Get the header from the rom image
memcpy(&RomName[0], (void *)(m_ROMImage + 0x20), 20);
CN64Rom::CleanRomName(RomName);
if (strlen(RomName) == 0)
{
strcpy(RomName, CPath(FileLoc).GetName().c_str());
CN64Rom::CleanRomName(RomName, false);
}
WriteTrace(TraceN64System, TraceDebug, "RomName %s", RomName);
m_RomName = RomName;
m_FileName = FileLoc;
m_MD5 = "";
if (!LoadBootCodeOnly)
{
//Calculate files MD5
m_MD5 = MD5((const unsigned char *)m_ROMImage, m_RomFileSize).hex_digest();
WriteTrace(TraceN64System, TraceDebug, "MD5: %s", m_MD5.c_str());
}
m_Country = (Country)m_ROMImage[0x3D];
m_RomIdent.Format("%08X-%08X-C:%X", *(uint32_t *)(&m_ROMImage[0x10]), *(uint32_t *)(&m_ROMImage[0x14]), m_ROMImage[0x3D]);
WriteTrace(TraceN64System, TraceDebug, "Ident: %s", m_RomIdent.c_str());
CalculateCicChip();
if (!LoadBootCodeOnly && g_Rom == this)
{
g_Settings->SaveBool(GameRunning_LoadingInProgress, false);
SaveRomSettingID(false);
}
if (g_Settings->LoadBool(Game_CRC_Recalc))
{
//Calculate ROM Header CRC
CalculateRomCrc();
}
return true;
}
bool CN64Rom::LoadN64ImageIPL(const char * FileLoc, bool LoadBootCodeOnly)
{
UnallocateRomImage();
m_ErrorMsg = EMPTY_STRING;
stdstr ext = CPath(FileLoc).GetExtension();
bool Loaded7zFile = false;
#ifdef _WIN32
if (strstr(FileLoc, "?") != NULL || _stricmp(ext.c_str(), "7z") == 0)
{
stdstr FullPath = FileLoc;
//this should be a 7zip file
char * SubFile = strstr(const_cast<char*>(FullPath.c_str()), "?");
if (SubFile == NULL)
{
//Pop up a dialog and select file
//allocate memory for sub name and copy selected file name to var
return false; //remove once dialog is done
}
else
{
*SubFile = '\0';
SubFile += 1;
}
C7zip ZipFile(FullPath.c_str());
ZipFile.SetNotificationCallback((C7zip::LP7ZNOTIFICATION)NotificationCB, this);
for (int i = 0; i < ZipFile.NumFiles(); i++)
{
CSzFileItem * f = ZipFile.FileItem(i);
if (f->IsDir)
{
continue;
}
stdstr ZipFileName;
ZipFileName.FromUTF16(ZipFile.FileNameIndex(i).c_str());
if (SubFile != NULL)
{
if (_stricmp(ZipFileName.c_str(), SubFile) != 0)
{
continue;
}
}
//Get the size of the rom and try to allocate the memory needed.
uint32_t RomFileSize = (uint32_t)f->Size;
//if loading boot code then just load the first 0x1000 bytes
if (LoadBootCodeOnly) { RomFileSize = 0x1000; }
if (!AllocateRomImage(RomFileSize))
{
return false;
}
//Load the n64 rom to the allocated memory
g_Notify->DisplayMessage(5, MSG_LOADING);
if (!ZipFile.GetFile(i, m_ROMImage, RomFileSize))
{
SetError(MSG_FAIL_IMAGE);
return false;
}
if (!IsValidRomImage(m_ROMImage))
{
SetError(MSG_FAIL_IMAGE);
return false;
}
g_Notify->DisplayMessage(5, MSG_BYTESWAP);
ByteSwapRom();
//Protect the memory so that it can not be written to.
ProtectMemory(m_ROMImage, m_RomFileSize, MEM_READONLY);
Loaded7zFile = true;
break;
}
if (!Loaded7zFile)
{
SetError(MSG_7Z_FILE_NOT_FOUND);
return false;
}
}
#endif
//Try to open the file as a zip file
if (!Loaded7zFile)
{
if (!AllocateAndLoadZipImage(FileLoc, LoadBootCodeOnly))
{
if (m_ErrorMsg != EMPTY_STRING)
{
return false;
}
if (!AllocateAndLoadN64Image(FileLoc, LoadBootCodeOnly))
{
return false;
}
}
}
char RomName[260];
//Get the header from the rom image
memcpy(&RomName[0], (void *)(m_ROMImage + 0x20), 20);
CN64Rom::CleanRomName(RomName);
if (strlen(RomName) == 0)
{
strcpy(RomName, CPath(FileLoc).GetName().c_str());
CN64Rom::CleanRomName(RomName,false);
}
WriteTrace(TraceN64System, TraceDebug, "RomName %s", RomName);
m_RomName = RomName;
m_FileName = FileLoc;
m_MD5 = "";
if (!LoadBootCodeOnly)
{
//Calculate files MD5
m_MD5 = MD5((const unsigned char *)m_ROMImage, m_RomFileSize).hex_digest();
WriteTrace(TraceN64System, TraceDebug, "MD5: %s", m_MD5.c_str());
}
m_Country = (Country)m_ROMImage[0x3D];
m_RomIdent.Format("%08X-%08X-C:%X", *(uint32_t *)(&m_ROMImage[0x10]), *(uint32_t *)(&m_ROMImage[0x14]), m_ROMImage[0x3D]);
WriteTrace(TraceN64System, TraceDebug, "Ident: %s", m_RomIdent.c_str());
CalculateCicChip();
if (!LoadBootCodeOnly && g_DDRom == this)
{
g_Settings->SaveBool(GameRunning_LoadingInProgress, false);
SaveRomSettingID(false);
}
if (g_Settings->LoadBool(Game_CRC_Recalc))
{
//Calculate ROM Header CRC
CalculateRomCrc();
}
return true;
}
//Save the settings of the loaded rom, so all loaded settings about rom will be identified with
//this rom
void CN64Rom::SaveRomSettingID(bool temp)
{
g_Settings->SaveBool(Game_TempLoaded, temp);
g_Settings->SaveString(Game_GameName, m_RomName.c_str());
g_Settings->SaveString(Game_IniKey, m_RomIdent.c_str());
g_Settings->SaveString(Game_UniqueSaveDir, stdstr_f("%s-%s", m_RomName.c_str(), m_MD5.c_str() ).c_str());
switch (GetCountry())
{
case Germany: case french: case Italian:
case Europe: case Spanish: case Australia:
case X_PAL: case Y_PAL:
g_Settings->SaveDword(Game_SystemType, SYSTEM_PAL);
break;
default:
g_Settings->SaveDword(Game_SystemType, SYSTEM_NTSC);
break;
}
}
void CN64Rom::ClearRomSettingID()
{
g_Settings->SaveString(Game_GameName, "");
g_Settings->SaveString(Game_IniKey, "");
}
void CN64Rom::SetError(LanguageStringID ErrorMsg)
{
m_ErrorMsg = ErrorMsg;
}
void CN64Rom::UnallocateRomImage()
{
m_RomFile.Close();
if (m_ROMImageBase)
{
ProtectMemory(m_ROMImage, m_RomFileSize, MEM_READWRITE);
delete[] m_ROMImageBase;
m_ROMImageBase = NULL;
}
m_ROMImage = NULL;
}
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